@article {181, title = {Quercus delgadoana (Fagaceae), a New Species from the Sierra Madre Oriental, Mexico}, journal = {Novon: A Journal for Botanical Nomenclature}, volume = {21}, year = {2011}, pages = {274{\textendash}277}, abstract = {

.\  Quercus delgadoana S. Valencia, Nixon \& L. M. Kelly (Fagaceae), a new species from the states of Hidalgo, Puebla, and Veracruz in the Sierra Madre Oriental, Mexico, is described and illustrated. We discuss its morphological similarity to Q. eugeniifolia Liebm., Q. sapotifolia Liebm., Q. salicifolia N\ée, Q. laurina Bonpl., and Q. affinis Scheidw., with which it shares narrowly lanceolate leaves and fasciculate stipitate trichomes in the axils of the secondary veins on the underside of the lamina. A dichotomous key is provided to distinguish these species.

}, issn = {1055-3177}, doi = {10.3417/2009054}, url = {http://www.bioone.org.proxy.uchicago.edu/doi/10.3417/2009054}, author = {Valencia Avalos, Susana and Nixon, Kevin C and Kelly, Lawrence M} } @article {179, title = {The taxonomic status of the Mexican oak Quercus undata (Fagaceae, Quercus, section Quercus)}, journal = {Revisita Mexicana de Biodiversidad}, volume = {82}, year = {2011}, pages = {1123-1131}, abstract = {

Quercus undata Trel. (Fagaceae, Quercus, Section Quercus) has a complex taxonomic and nomenclatural history. Intensive sampling of oaks at the type locality of Q. undata Trel. in Durango, Mexico and evaluation of herbarium specimens and plants in the field indicate that Q. undata represents variation in Quercus chihuahuensis Trel. in white oak communities where introgressive hybridization among Q. chihuahuensis, Q. grisea Liebm., and a third white oak, Q. arizonica Sarg. made species identification difficult. Endlich\’s type specimen of Q. undata, as designated by Trelease, was apparently destroyed in bombing raids on Berlin during World War II, and we propose herein as lectotype the Trelease illustration of the type. An epitype is also designated in support of the lectotype, given that some features cannot be critically observed on the illustration. The long peduncles of the specimen illustrated by Trelease indicate a close relation to Q. chihuahuensis.

}, keywords = {epitype, introgressive hybridization, lectotype, Mexico, Sierra Madre Occidental}, author = {Bacon, Jeffrey R. and D{\'a}vila-Aranda, Patricia Dolores and Spellenberg, Richard and Gonz{\'a}lez-Elizondo, M. Socorro} } @article {177, title = {Leaf phenology mediates provenance differences in herbivore populations on valley oaks in a common garden}, journal = {Ecological Entomology}, year = {2015}, pages = {n/a-n/a}, abstract = {

1. Plants from different populations often display a variation in herbivore resistance. However, it is rarely understood what plant traits mediate such differences. 2. It was tested how leaf phenology affects herbivore populations in a 15-year-old common garden of valley oaks (Quercus lobata N\ée) with different populations and maternal parents from throughout the Q. lobata range. 3. The abundance of leaf miners (Stigmella sp. Shrank) and leaf phenology of oaks in the common garden was measured. 4. Leaf miner abundance varied among provenance locations (population), but not among maternal parents within populations. Leaf phenology varied by provenance location and maternal parent, and trees that leafed out earlier accrued higher leaf-miner abundance. Path analysis indicated that leaf phenology was the likely driver of provenance and parental differences in resistance to leaf miners. 5. Understanding population differences is particularly important when considering transport of genotypes for ornamental or restoration purposes. The present study suggests that similarity in leaf phenology may be one factor that could be used to find genotypes with a similar herbivore resistance to local genotypes.

}, keywords = {Folivory leaf mine local adaptation provenance Quercus}, author = {Pearse, Ian S. and Baty, Jill H. and Herrmann, Dustin and Sage, Richard and Koenig, Walter D.} } @article {161, title = {A framework phylogeny of the American oak clade based on sequenced RAD data}, journal = {PLoS ONEPLoS ONE}, volume = {9}, year = {2014}, pages = {e93975}, abstract = {Oaks (Quercus, Fagaceae) are notorious in plant systematics for the problems they pose at the species level and for higher-level phylogenetics. Previous studies based on nuclear and chloroplast DNA sequences have failed to resolve the backbone phylogeny of the genus with strong support. In this study, we utilize next-generation sequencing of restriction-site associated DNA (RAD-Seq) to resolve a framework phylogeny of a predominantly American clade of oaks whose crown age is estimated at 23{\textendash}33 million years old. Using a recently developed analytical pipeline for RAD-Seq phylogenetics, we created a concatenated matrix of 1.39E06 aligned nucleotides, constituting 27,727 sequence clusters or {\textquoteleft}loci.{\textquoteright} We reran a subset of seven individuals as technical replicates and found that RAD-Seq data are readily combined across runs, with no difference in phylogenetic placement between replicates, despite the fact that a change in sequencing platforms between replicate runs resulted in data overlap between technical replicates of only 43{\textendash}64\%. 17\% (4,715) of the loci we analyzed could be matched with high confidence (BLASTN E-value < 1E{\textendash}15) to one or more expressed sequence tags (ESTs) in NCBI Genbank. A concatenated matrix of the loci that BLAST to at least one EST sequence provides approximately half as many variable or parsimony-informative characters as same-sized datasets from the non-EST loci. The EST-associated matrix is more complete (fewer missing loci) and has slightly lower homoplasy than non-EST subsampled matrices of the same size, but there is no difference in phylogenetic support or relative attribution of base substitutions to internal versus terminal branches of the phylogeny. The phylogeny we recover provides a robust estimate of the framework phylogeny for the American oak clade and demonstrates the utility of RAD-Seq data for inferring phylogeny in a 23{\textendash}33 million year-old vascular plant clade.}, keywords = {Expressed sequence tags (EST), Fagaceae, next-generation sequencing, phylogenomics, plant systematics, Quercus, restriction-site associated DNA}, author = {Hipp, Andrew L. and Eaton, Deren A. R. and Cavender-Bares, Jeannine and Fitzek, Elisabeth and Nipper, Rick and Manos, Paul S.} } @article {157, title = {Application of plastid and nuclear markers to DNA barcoding of Euro-Mediterranean oaks (Quercus, Fagaceae): problems, prospects and phylogenetic implications}, journal = {Botanical Journal of the Linnean SocietyBotanical Journal of the Linnean Society}, year = {2013}, pages = {n/a-n/a}, abstract = {DNA barcoding, a species identification system based on sequences from a short, standardized DNA region, has emerged recently as a new tool for taxonomists. We investigated the discriminatory power of a subset of highly variable proposed plant barcoding loci (matK, trnH-psbA, ITS2) in Quercus, a taxonomically complex tree genus of global importance. The research included all currently recognized species and some major variants of the Mediterranean region and Europe (32 taxa) and 17 East Asian and North American species used for comparison. Based on sequence character state, we assigned unique plastid haplotypes to 40.8\% of the investigated species; ITS2 increased the resolution up to 87.8\% of total taxa. Nevertheless, unsuccessful genetic distance-based discrimination questioned the potential efficiency of correct species identification for future studies. Most species appeared to be nonmonophyletic in parallel phylogenetic tests. Three subgeneric groups were outlined, with different rates of within-group variability and geographical differentiation. Members of one of these groups (corresponding to the Eurasian Group Ilex) were paraphyletic to Group Quercus from the New and Old World and the Eurasian Group Cerris. The data gathered indicate that barcoding markers may help to identify closely related species clusters and contribute to the inference of major diversification and evolutionary patterns in oaks, but the methodology per se appears to be of limited efficacy in defining species limits, unless we make a profound revision of traditional Quercus taxonomic categories.~{\textcopyright} 2013 The Linnean Society of London, Botanical Journal of the Linnean Society, 2013, 00, 000{\textendash}000.}, keywords = {cerris, ecology, ilex, phylogeny, regional sampling}, isbn = {1095-8339}, author = {Simeone, Marco C. and Piredda, Roberta and Papini, Alessio and Vessella, Federico and Schirone, Bartolomeo} } @article {134, title = {Cytogenetic studies on Quercus L. (Fagaceae) species belonging to Ilex and Cerris section in Turkey}, journal = {CaryologiaCaryologia}, volume = {64}, number = {3}, year = {2011}, pages = {297-301}, abstract = {A detailed karyotype analyses of the five species of Quercus L. (Q. coccifera L., Q. ilex L., Q. aucheriJaub. \& Spach, Q. cerris L. and Q. ithaburensis Decne subsp. macrolepsis (Kotschy) Hedge \& Yalt.) belonging toIlex and Cerris section were examined. The somatic chromosome number of all studied taxa 2n = 24 was found.The karyotypes of investigated species showed the great similarity with the chromosome length and the positionof centromere. Chromosome number and detailed karyotype of these species were first time counted from Turkey.}, keywords = {cerris, ilex, Karyotype analyses, Quercus, Turkey}, author = {Yilmaz Aykut and Emel Uslu and M. Tekin Baba{\c c}} }